Table 4.

Seed-based functional connectivity differences between PIs and GSs.

Seed point	Brain regions of peak coordinates	R/L	BA	Voxel volume (mm3)	t-score of peak voxel	MNI coordinates
						X, Y, Z
R_middle temporal gyrus	Middle temporal gyrus, inferior temporal gyrus	L	20,21	7155	4.9792	−66 −39 −12
	Inferior parietal lobule	L	7, 39, 40	7803	5.1241	−45 −57 45
L_middle temporal gyrus	Middle frontal gyrus, inferior frontal gyrus	L	9, 44, 45	18657	−5.204	−51 12 30
R_insula	Insula, Postcentral Gyrus	L	3, 13	8181	−4.6019	−42 −18 21
L_superior frontal gyrus	Precuneus	L	7	11259	−5.3114	−3 −60 42

Notes: Statistical threshold was set at voxel threshold of p < 0.01 and cluster threshold of p < 0.01with GRF correction.

Abbreviations: PIs, patients with primary insomnia; GSs, good sleepers; R, right; L, left; BA, Brodmann’s area; MNI, montreal neurological institute; GRF, Gaussian random field.